5 weeks away from CN--Q re: special needs

we are spending NYE and a week after at CN and I can't wait! This is our second trip to Couples, we went to CSS last Sept and loved it. question:

I have to eat gluten free. I know this has been asked before, and I know that I need to notify the resort and meet with the chef about the meals--my question is on timing. Do i email CN prior to departure (and if so, how early prior to)? or do i wait until arrival to mention this to them?

thanks in advance!

Last edited by pinkcloud; November 29th, 2011 at 10:29 AM.
Reason: edited to remove Q i already answered